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45 条记录 (耗时 0.024 秒)

    Driving circuit for stepping motor
    22.
    发明授权
    Driving circuit for stepping motor 有权
    步进电机驱动电路

    公开(公告)号：US08416664B1

    公开(公告)日：2013-04-09

    申请号：US13630922

    申请日：2012-09-28

    申请人： Hiroaki Kawakami ,  Masashi Tanabe

    发明人： Hiroaki Kawakami ,  Masashi Tanabe

    IPC分类号： G11B20/00

    CPC分类号： G11B7/08582

    摘要： A stepping-motor-driving circuit for an optical pickup: includes a control-signal-generating circuit to generate a plurality of control signals for supplying driving currents to driving coils having a plurality of phases during energized periods, with a de-energized period therebetween; a plurality of output circuits to supply the currents to the respective coils, in response to the signals; an induced-voltage-detecting circuit to compare a voltage generated each in the coils with a threshold voltage during the de-energized period; a threshold-voltage-setting circuit; and a determining circuit to determine whether a collision state is present where the pickup reaches an end of a movement range, based on an induced-voltage-detecting-circuit-detection result, the threshold voltage set at a voltage between a voltage generated each in the coils during the de-energized period when the stepping motor stops or rotates in the state, and a voltage generated therein in the de-energized period when no collision state is present.

    摘要翻译： 一种用于光学拾取器的步进电动机驱动电路：包括控制信号发生电路，用于产生多个控制信号，用于在通电期间向具有多个相位的驱动线圈提供驱动电流，其间具有断电周期 ; 多个输出电路，用于响应于所述信号向各个线圈提供电流; 感应电压检测电路，用于在断电期间将线圈中产生的电压与阈值电压进行比较; 阈值电压设定电路; 以及确定电路，其基于感应电压检测电路检测结果来确定在所述拾取器到达所述移动范围的结束处是否存在碰撞状态，所述阈值电压设置在每个所产生的电压之间的电压 在步进电动机在该状态下停止或旋转的断电期间的线圈，以及在没有碰撞状态的情况下在断电期间产生的电压。

    Image forming method
    23.
    发明申请
    Image forming method 有权
    图像形成方法

    公开(公告)号：US20050254856A1

    公开(公告)日：2005-11-17

    申请号：US11128365

    申请日：2005-05-13

    申请人： Masaharu Miura ,  Hiroaki Kawakami

    发明人： Masaharu Miura ,  Hiroaki Kawakami

    IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G21/00

    CPC分类号： G03G21/0011

    摘要： The invention is to provide an image forming method of a long service life, a high image quality and a low running cost, capable of maintaining a stable cleaning performance over a prolonged period without causing an image deletion phenomenon, even with a image bearing member such as a photosensitive member, of a high durability (high strength and high abrasion resistance). The invention provides an image forming method characterized in that the image bearing member has a universal surface hardness HU of 150 to 220 N/mm2 and an elastic deformation ratio We of 40 to 65%, and, for a crossing angle θ (°) between a rotary axis of the contact charging roller and a rotary axis of the image bearing member, for a ratio A (weight %) of the transfer residual toner and the abrasive particles and for a contact pressure B (g/cm) of the cleaning blade, HU, We, A, B and θ satisfy the following relations (I), (II) and (III): (1/6000)×HU×We≦A×B  (I) A/B≦θ  (II) 10≦B≦50  (III).

    摘要翻译： 本发明提供一种使用寿命长，图像质量高，运行成本高的图像形成方法，即使图像承载部件具有图像承载部件，也能够在长时间内保持稳定的清洁性能而不引起图像删除现象 作为感光构件，具有高耐久性（高强度和高耐磨性）。 本发明提供一种图像形成方法，其特征在于，图像承载部件的通用表面硬度HU为150〜220N / mm 2，弹性变形率We为40〜65％，对于 接触充电辊的旋转轴线与图像承载部件的旋转轴线之间的交叉角度θ（°），转印残留调色剂和磨料颗粒的比例A（重量％）和接触压力B（ 清洁刮刀，HU，We，A，B和θ的g / cm满足以下关系式（I），（II）和（III）：<？in-line-formula description =“In-line Formulas”end =“lead”？>（1/6000）xHUxWe <= AxB（I）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“ 在线公式“end =”lead“？> A / B <= theta（II）<？in-line-formula description =”In-line Formulas“end =”tail“？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 10 <= B <= 50（III）。 <？in-line-formula description =“In-line Formulas”end =“tail”？>

    Valve lifter
    24.
    发明授权
    Valve lifter 失效
    气门挺杆

    公开(公告)号：US5743226A

    公开(公告)日：1998-04-28

    申请号：US897023

    申请日：1997-07-18

    申请人： Tamotsu Tohdoh ,  Yasuo Fukuda ,  Hiroaki Kawakami

    发明人： Tamotsu Tohdoh ,  Yasuo Fukuda ,  Hiroaki Kawakami

    IPC分类号： F01L1/14 ,  F01L1/20 ,  F01L13/00

    CPC分类号： F01L1/205 ,  F01L1/143 ,  F01L13/0036

    摘要： A valve lifter has a lifter body with a first surface arranged to feet on a pair of low lift cams on a camshaft, and a pair of hydraulic slides disposed in a bore of the lifter body. The slides have a stored position wherein they define therebetween and within the bore a chamber arranged to allow entry of a high lift cam on the camshaft disposed between the pair of low lift cams. The lifter body is formed with a window opening to the chamber to allow access of the high lift cam to the chamber. The slides have an operative position wherein they define a second surface opposite to the window arranged to rest on the high lift cam.

    摘要翻译： 气门挺杆具有升降机主体，其具有第一表面，该第一表面布置成在凸轮轴上的一对低升程凸轮上的脚上，以及设置在升降机主体的孔中的一对液压滑块。 滑架具有存储位置，其中它们在它们之间限定，并且在孔内设置有允许高速提升凸轮进入设置在一对低升程凸轮之间的凸轮轴上的腔室。 升降机体形成有通向腔室的窗口，以允许高升程凸轮进入腔室。 滑块具有操作位置，其中它们限定与布置成搁置在高升程凸轮上的窗口相对的第二表面。

    Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax
    26.
    发明授权
    Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax 失效
    用于显影静电图像的调色剂和包含烃蜡的热固定方法

    公开(公告)号：US5364722A

    公开(公告)日：1994-11-15

    申请号：US943032

    申请日：1992-09-10

    申请人： Hirohide Tanikawa ,  Hiroaki Kawakami ,  Masatsugu Fujiwara ,  Masashi Jinbo ,  Tsutomu Onuma

    发明人： Hirohide Tanikawa ,  Hiroaki Kawakami ,  Masatsugu Fujiwara ,  Masashi Jinbo ,  Tsutomu Onuma

    IPC分类号： G03G9/087 ,  G03G13/20 ,  G03G9/00

    CPC分类号： G03G9/08782 ,  G03G13/20 ,  Y10S430/105

    摘要： A toner for developing electrostatic images is prepared from a binder resin and a hydrocarbon wax. The toner is provided with improved fixability and anti-offset characteristic by controlling the thermal characteristic of the hydrocarbon wax so as to provide a DSC (differential scanning calorimeter) curve, showing an onset temperature of heat absorption in the range of 50.degree.-110.degree. C. and at least one heat absorption peak P1 in the range of 70.degree.-130.degree. C. giving a peak temperature T.sub.P1 on temperature increase, and showing a maximum heat evolution peak temperature in the range of T.sub.P1 .+-.9.degree. C. on temperature decrease. Correspondingly, the toner provides a DSC curve showing a rising temperature of heat absorption of at least 80.degree. C., an onset temperature of heat absorption of at most 105.degree. C. and a heat absorption peak temperature in the range of 100.degree.-120.degree. C., respectively on temperature increase, and showing a heat evolution peak temperature in the range of 62.degree.-75.degree. C. and a heat evolution peak intensity ratio of at least 5.times.10.sup.-3 on temperature decrease.

    摘要翻译： 用于静电图像显影的调色剂由粘合剂树脂和烃蜡制备。 通过控制烃蜡的热特性，调色剂具有改进的定影性和抗污损特性，以提供DSC（差示扫描量热计）曲线，其显示在50°-110°范围内的吸热开始温度 和至少一个在70°-130℃范围内的吸热峰P1，在温度升高时提供峰值温度TP1，并且在TP1 +/- 9℃范围内显示最大放热峰值温度 温度下降。 相应地，调色剂提供DSC曲线，其显示吸热温度上升至少80℃，吸热开始温度至多105℃，吸热峰温度在100-120℃范围内 ℃，分解温度升高，放热峰值温度在62°-75℃范围内，放热峰强度比至少为5×10-3，降温。

    Motor drive circuit
    28.
    发明授权
    Motor drive circuit 有权
    电机驱动电路

    公开(公告)号：US09209725B2

    公开(公告)日：2015-12-08

    申请号：US13234949

    申请日：2011-09-16

    申请人： Hiroaki Kawakami

    发明人： Hiroaki Kawakami

    IPC分类号： H02P6/00 ,  H02P6/04 ,  H02P6/14

    CPC分类号： H02P6/14

    摘要： A motor drive circuit includes: a first H-bridge circuit including a first source transistor and a first sink transistor connected in series and a second source transistor and a second sink transistor connected in series; a second H-bridge circuit including a third source transistor and a third sink transistor connected in series and a fourth source transistor and a fourth sink transistor connected in series; and a first control circuit to turn on or off the first and second source transistors and the third and fourth sink transistors in a synchronized manner, turn on or off the third and fourth source transistors and the first and second sink transistors in a synchronized manner, and further turn on or off the first and second source transistors and the third and fourth sink transistors in a complementary manner to the third and fourth source transistors and the first and second sink transistors.

    摘要翻译： 电动机驱动电路包括：第一H桥电路，包括串联连接的第一源晶体管和第一宿晶体管和串联连接的第二源晶体管和第二宿晶体管; 包括串联连接的第三源晶体管和第三宿晶体管的第二H桥电路和串联连接的第四源晶体管和第四宿晶体管; 以及以同步方式导通或关闭第一和第二源极晶体管以及第三和第四宿晶体管的第一控制电路，以同步的方式导通或关闭第三和第四源晶体管以及第一和第二宿晶体管， 并且还以与第三和第四源极晶体管以及第一和第二宿晶体管互补的方式进一步接通或关断第一和第二源极晶体管以及第三和第四宿晶体管。

    Motor drive circuit
    29.
    发明授权
    Motor drive circuit 有权
    电机驱动电路

    公开(公告)号：US08432115B2

    公开(公告)日：2013-04-30

    申请号：US13234929

    申请日：2011-09-16

    申请人： Hiroaki Kawakami

    发明人： Hiroaki Kawakami

    IPC分类号： H02P6/00

    CPC分类号： H02P6/14

    摘要： A motor-drive circuit includes: H-bridge circuits in a pair each including first-source and first-sink transistors, and second-source and second-sink transistors, wherein a motor coil connected between a connection point of the first-source and first-sink transistors and a connection point of the second-source and second-sink transistors; a current-detection circuit to detect a current flowing through the motor coil of each of the H-bridge circuits; an oscillation circuit; and a control circuit to control the H-bridge circuits so as to turn on the first-source and second-sink transistors of each of the H-bridge circuits at intervals of a predetermined period based on an oscillation signal, and turn off the second-sink transistor of each of the H-bridge circuits after a value of a current flowing through the motor coil of each of the circuits reaches a predetermined value, based on a detection result of the current-detection circuit.

    摘要翻译： 一种电动机驱动电路包括：一对H桥电路，包括第一源极和第一晶体管，以及第二源极和第二沟道晶体管，其中，电动机线圈连接在第一源极的连接点和 第一宿晶体管和第二源极和第二宿晶体管的连接点; 电流检测电路，用于检测流过每个H桥电路的电动机线圈的电流; 振荡电路; 以及控制电路，用于控制H桥电路，以基于振荡信号以预定周期的间隔接通每个H桥电路的第一源极和第二吸收晶体管，并且关闭第二 基于电流检测电路的检测结果，在流过每个电路的电动机线圈的电流值达到预定值之后，H桥电路中的每个的桥接晶体管。

    MOTOR DRIVE CIRCUIT
    30.
    发明申请
    MOTOR DRIVE CIRCUIT 有权
    电机驱动电路

    公开(公告)号：US20120068648A1

    公开(公告)日：2012-03-22

    申请号：US13234949

    申请日：2011-09-16

    申请人： Hiroaki Kawakami

    发明人： Hiroaki Kawakami

    IPC分类号： H02P6/14

    CPC分类号： H02P6/14

    摘要： A motor drive circuit includes: a first H-bridge circuit including a first source transistor and a first sink transistor connected in series and a second source transistor and a second sink transistor connected in series; a second H-bridge circuit including a third source transistor and a third sink transistor connected in series and a fourth source transistor and a fourth sink transistor connected in series; and a first control circuit to turn on or off the first and second source transistors and the third and fourth sink transistors in a synchronized manner, turn on or off the third and fourth source transistors and the first and second sink transistors in a synchronized manner, and further turn on or off the first and second source transistors and the third and fourth sink transistors in a complementary manner to the third and fourth source transistors and the first and second sink transistors.

    摘要翻译： 电动机驱动电路包括：第一H桥电路，包括串联连接的第一源晶体管和第一宿晶体管和串联连接的第二源晶体管和第二宿晶体管; 包括串联连接的第三源晶体管和第三宿晶体管的第二H桥电路和串联连接的第四源晶体管和第四宿晶体管; 以及以同步方式导通或关闭第一和第二源极晶体管以及第三和第四宿晶体管的第一控制电路，以同步的方式导通或关闭第三和第四源晶体管以及第一和第二宿晶体管， 并且还以与第三和第四源极晶体管以及第一和第二宿晶体管互补的方式进一步接通或关断第一和第二源极晶体管以及第三和第四宿晶体管。